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Commit 41f2f127 authored by Jason Wang's avatar Jason Wang Committed by David S. Miller
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virtio-net: don't do header check for dodgy gso packets 



There's no need to do header check for virtio-net since:

- Host sets dodgy for all gso packets from guest and check the header.
- Host should be prepared for all kinds of evil packets from guest, since
  malicious guest can send any kinds of packet.

So this patch sets NETIF_F_GSO_ROBUST for virtio-net to skip the check.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dd450777

drivers/net/virtio_net.c

+2 −0
Original line number Diff line number Diff line
@@ -1759,6 +1759,8 @@ static int virtnet_probe(struct virtio_device *vdev) 
		if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_ECN))

			dev->hw_features |= NETIF_F_TSO_ECN;



		dev->features |= NETIF_F_GSO_ROBUST;



		if (gso)

			dev->features |= dev->hw_features & NETIF_F_ALL_TSO;

		/* (!csum && gso) case will be fixed by register_netdev() */